Valved drum cap and spigot assembly



March 3, 1953 2 SHEETS--SHEET 1 Filed March 11. 1949 all March 3, 1953J. R. SNYDER VALVED DRUM CAP AND SPIGOT ASSEMBLY 2 SHEETS--SHEET 2 FiledMarch 11, 1949 a f 5; W y f g a L m a a a a 0 km Q wmzwa 1 Q J J4?{MM/44% Patented Mar. 3, 1953 VALVED DRUM CAP AND SPIGOT ASSEMBLY JacobRush Snyder, Cleveland, Ohio, assignor to Thompson Products, Inc.,Cleveland, Ohio, a

corporation of Ohio Application March 11, 1949, Serial No. 80,948

Claims.

This invention relates to a valve equipped bung bushing assembly forreceiving a seal ring carrying valve actuating detachable spigot whichselectively positions the seal ring of the assembly While the spigot isreleasably retained for holding the valve in open position or out ofvalve actuating position.

More particularly, this invention relates to a valved bung bushingassembly equipped with a spring loaded valve to control drainage from abarrel or drum and also with a spring loaded valve forming a dirteliminator seal to effectively seal a spigot opening in the bung bushingassembly both in transport of the drum and upon withdrawal of thespigot.

According to this invention, a ring is adapted to fit a bung bushingwhich is equipped with a spring loaded valve to control drainage from abarrel or drum. This bushing ring ha a passageway therethrough adaptedto slidably receive a detachably mounted spigot. The end of the spigotactuates a valve to open position. In order to prevent leakage betweenthe passageway andspigot and to retain the spigot in axial adjustedposition in the bushing ring, the spigot carries a resilient seal ringaround the ends thereof received by the bushing ring. To retain thespigot in position, the spigot is provided with a ring lock whichengages spaced grooves in the bushing ring one of which locates thespigot with the valve in its closed position and the other groovelocates the spigot in the open position of the valve. The inner grooveis positioned to retain the spigot so that it will hold the valve in anopen position, while the outer groove is positioned to prevent too rapidwithdrawal of the spigot from the bushing ring after the valve isclosed, thereby eliminating the splashing of fluid through the bushingring.

It is an object of the invention to provide a cap and spigot assemblyfor containers such as drums, barrels and the like which permit rapidinsertion and Withdrawal of a disconnected drain spigot withoutdestroying the hermetic sealing capacity of the cap.

It is a further object of the present invention to provide a spigot andseal assembly for removable insertion into a valved bung bushing inselected positions to hold the valve in open position and to eliminatesplashing of the liquid from the bushing as the spigot is withdrawn.

Another object of the present invention is to provide a spigot and ringassembly for selective insertion into containers for gasoline and othervolatile fluids to permit withdrawal of liquid without excessivevolatilization of the liquid during the draining operation.

A still further object of the invention is to utilize a ring lock andseal construction on a drum spigot ior holding the spigot in adjustedposition to the bung bushmg while preventing leakage between the spigotand bushing.

Another object of the invention is to provide a spring biased drum capvalve and dirt eliminator valve tor a hung bushing which willautomatically close thereby stopping nuid now and keeping all elements,such as dirt, water, etc. from entering the drum.

A still further object of the invention is to provioe a permanentautomatic fluid drum cap, or adapter that has a low initial andmaintenance cost and is functionally highly eificient.

Another ob ect of the invention is to provide a removable spigot or abung bushing that may be automatically held in flow position with a lockring engaging a groove in the bung bushing and in lap or valve closedposition in another groove in the drum bushing.

Other and further objects of the invention will be apparent from thefollowing description of the annexed sheets of drawings, whichillustrate several preferred embodiments of the invention.

On the drawings:

Figure l is a fragmentary cross-sectional view of an end head of a metaldrum equipped with a cap assembly according to the present invention andillustrating the drain spigot in position for withdrawal of fluid;

Figure 2 is a view similar to Figure 1 but showing the poppet valveclosed and the spigot held by a lock ring in the first groove of thebung bushing;

Figure 3 is a fragmentary cross-sectional view of the end head of ametal drum equipped. with a cap assembly according to the presentinvention and illustrating the assembly in hermetically sealed andlocked position as in transit or storage;

Figure 4 is front view in elevation of a dirt eliminator drum cap wiredin place;

Figure 5 is a view in elevation of the poppet valve and bung bushing;

Figure 6 is a vertical sectional view taken along line VIVI illustratingthe ring lock construction of the spigot and bung bushing;

Figure '7 is a fragmentary cross-sectional view of the end head of ametal drum equipped with an adapter flapper valve drum cap and dirtelimia c p of a mo ification of my invention;

Figure 8 is a vertical elevational view of a spring biased flapper valvemounted on the interior end of the bung bushing of the modification ofFigure '7;

Figure 9 is a fragmentary sectional view illustrating the spigot andflapper valve and hinged cover in flow position in which the spigot isheld by the second groove; and,

Figure 10 is a vertical sectional view of the spigot and flapper valvein closed position and held by the first ring groove of the bung bushingand with the hinge cover open.

As shown on the drawings:

Referring to Figure 1, the reference character designates generally ametal drum including a cylindrical side wall or shell ll formed with aperipheral flange or skirt l2 and'an end head-portion I3, providing arecess hi on the end of the drum.

The drum end portion, 13 has a bung bushing l attached thereto. The bungbushing I5 is threaded to receive a bushing ring or adapter [6 and thedrum is sealed againstleakage b gasket l5 assembled between the bushingand the bushing ring. The bushing ring. it which provides a permanentautomatic fluid drum cap may be suitably formed to receive a spannerwrench and the like to tighten, the ring in the bung bushing [5.

A central passage I! extends through the ring [6 and is provided atitsinner end with a valve seating face [8.

Referring to Figure 3 and 5, laterally spaced posts or guide members l9are integrally formed with bushing ring I8 to provide a support for apoppet valve or closure valve 20. A valve guide 2! of cup shape form asillustrated in Figure 3 has lanced portions 22 to engage complementallyformed holes 23 in guide members Hi. The valve guide 2| is aperturedslidably to receive a stem 2d of the valve 20 and has an end wallcontaining this aperture which forms a spring retainer for a conicallyshaped spring 25 surrounding the stem 24, Figure 4, and'urging the valve2i) at all times toward the seat it. The valve 20 is provided with a.disk-like synthetic rubber sealing meansv 25 held in place by a retainer27 being stakedinposition at 28. The retainer capZl is provided withthree legs or prongs 29 which are tapered so that the closure valve issoperfectly guided back to its original seatingposition that the syntheticrubber seal 26 holdsigasoline perfectly even when tested at -92 F. whichis 12". below the most.severe specifications.

Itis important whenm'aking the synthetic rubber valve seat disk,26fromsheetedmateria1 to use a given thickness but, however, it frequentlyoccursthat certain portions of the sheets will vary dimensionally. Ifthe cross-section is too thick then such excess thickness will flow tothe exposedor free seating surface which will bubbleize the seatingsurface and interfere with effective sealing. It is, therefore,preferred to provide. a serrated surface 30 provided by annular ringswhich automatically .provides grooves into which such excessrubberthickness can flow without detrimentally affecting the desiredsealingefficiency of the rubber disk and at the same time improve the crosspressure holding qualities of the seal.

From the foregoing description, it is evident that there has beendescribed a simple poppet valve construction which is normally biasedclosed with it seal against the seat Hlof thebushing ring I6. After therubber vseal 26 and the retainer 4 21 are assembled onto the valve 20and the spring Iii is disposed around the stem 2%, the poppet valve isreadily assembled between the guides IQ of the bushing ring it by merelysnapping the guide cap 2! with the guides l9 whereby the lanced portions22 lock the valve in the holes 23.

As shown in Figure 1, a spigot 3| has an end slidably fitting in thepassage I! of the bushing ring to engage the prongs 29 formed on thevalve and force the poppet valve off of its seat a sufficient distanceto effect drainage of the drum into the spigot. The prongs 29 which arespaced apart circumferentially of the valve provide free drain portstherebetween and serve to space the valve 29 sufiiciently from the endof the spigot to effect free drainage.

The bushing ring I 5 is also provided with a dirt eliminator drum cap 32to prevent all elements, such as dirt, water, etc. from entering thedrum and particularly to prevent corrosion of the central passage l! ofthe bushing ring which might prevent the insertion of the spigot 3!.This assures any remaining fluid being keptcleanof corroding fluids andsubstances which heretoforehave been responsible for reducing thelife-expectancy of-a drum considerably.

Referring to Figures 1, 3 and 4, theparticular construction of the dirteliminator drum cap 32 will be described.- The bushing ring it oradapter is provided on its front face with symmetrically spaced fianges33 complementally formed with respect to ears 3 3 of the'cap, and thecap 92 is hinged to the flanges 33 byhinge pin 35. A torsion spring 36formed as illustrated in Figure 4 with a laterallyextending portionengaging a complementally formed groove 38 spring biases the dirteliminator cap tl against the seat 39 formed on-the bushing ring oradapter IS. The cap-Sfis sealed by a gasket d8 similarly formed to thegasket 28 described above from synthetic rubber such as chloroprenerubberwhich can withstand attack by the fiuids'contained in the drum.The gasket ii! is held in placeby a washer t] by staking over the cap asat 42. The annular seat 23 for thegasket 46 is also serrated similarlywith annuiar groovesasthe seat 36 described with reference tothepoppetvalve, this serrating automatically providing grooves into whichexcess rubber thickness can flow Without detrimentaily affecting thedesired sealing efiiciency of the rubber disk 58 and at the same timeimprove-the-cross pressure holding qualities of the seal.

The hinge pin 35 is held in position-by staking the hinge support 33.

To provide a flat surface for the cap 32, the adapter it is recessed,for example, as illustrated at Figure 4 to receive the capand also toprovide relief for the seat 39.-

The cap 32 is also provided witha lip 32a, complementally'formed to arecess 54 for the insertion of the operators finger in raising the capfor the insertion of the spigot or, for example, if the capis frozenor'stuck it provides a recess for the insertion of the tapered extension3| of the spigot, Figure 1, which may be inserted in the recess andunderneath the lip 32a to'pry the cap open for the insertion of thespigot.

The bushingring H3 is also provided with recesses 35 for assembling theassembled poppet valve drum cap to the-drum head witha spanner Wrench-asis now done with the conventional oldstyle bung cap.

During transit or storage; the hinged va1ve-32 is firmly held in itsclosed position by wiringdB account" which passes through holes 4?extending from the recesses 55 to the edge of the adapter, asillustrated in Figure 4, and firmly twisting the ends of the wiretogether as at 48.

Referring to Figures 1, 2, and 6, the novel spigot construction SI andthe complementally formed central passage ll of the bushing ring It willbe described. This construction is particularly adapted for detachablymounting the spigot in the adapter l6 after the dirt eliminator cap 32has been opened to release the poppet valve drum cap 25 in order thatthe fluid within the container or drum It may be readily discharged fromthe spigot.

Figure 1 shows the assembly of the dirt eliminator cap opened for theinsertion of the spigot 3| and with the spigot in flow position, whereasFigure 2 illustrates the poppet valve closed with the spigot held inposition in lap or closed position. The spigot assembly includes a diecast body 3| and a rubber-like O ring seal 43 closel; fitted into awider groove 56 of the spigot body. The spigot has a converging, taperedend portion 5| engaging a complementally formed portion 52 of theadapter I6 at the entrance of the passage ll. The passage H tapers orconverges inwardly to the valve seat It to receive the tapered end 5| sothat the discharge passage to the spigot can have a diameter almost aslarge as the seat Iii, thereby accommodating full discharge capacityfiow from the valve. This arrangement permits the use of a smallerdiameter valve seat without loss of flow capacity. Such a smaller valveseat acts on a smaller circle of the valve head gasket 26 therebyreducing the eiiect of resistance toward opening the valve which isexerted by the fiuid in the drum. It will be noted that the seat l6 onlyengages a narrow band area of the gasket which lies immediately adjacentthe discharge opening.

A shoulder or flange 53 is provided on the spigot to be bottomed on thecomplementally formed seat 39 of the dirt eliminator cap 32 for limitingthe travel of the spigot into the passage Referring to Figures 1, 2, and6, the passage I! is provided with an inner groove 55 and an outerpositioned groove 55 on the peripheral surface of the passage il. Thesegrooves are adapted to be engaged upon the insertion of the spigot 5| bya lock ring 55 seated in a complementally formed recess or annularformed groove 5'! of the spigot. The lock ring 56 is preferably madeoblong, as illustrated in Figure 6, so that the two ends will contactthe spigot grooved diameter 51 and thereby not scratch the insidediameter of the spigot chamber leaving the two smooth sides of the ringas looking surfaces in the grooves 54 and 55.

The body of the spigot assembly 3| has an angled passage 58 extendingoutwardly from the inner end of the spigot 3| to a downwardly extendingdischarge spout portion 59, as illustrated in Figure l. A convenientoperating handle 3| is provided above the spout 55.

Referring to Figure 2, the spigot assembly is shown partially insertedin the passage ll. To insert the spigot 35 as shown in Figure 2, thedirt eliminator valve or cap 32 is opened and the spigot is inserted inthe spigot chamber H of the cap or adapter it. Before the lock ring 56engages the groove 55, the 0 ring 49 will be in contact with theperiphery of the spigot chamber l7 and be in position to prevent fluidleakage when the inner ends of the spigot forces the valve 20 from itsseat by engaging the legs 29 of the valve cap member 21. In the positionshown in Figure 2, the valve 20 is still closed and the container sealedby virtue of the contact between the gasket 26 and the valve seat IB.

Figure 1 shows the condition when the spigot 3| is completely insertedinto the passage I1, and the valve assembly 20 is open to permitdrainage.

In this position, the O ring 49 still forms a seal between the spigotand the passage H and the spigot 3| is in position so that the lock ring56 engages the inner groove 54. The tapered end portion 5| of the spigotis fitted into the complementally formed valve seat portion 52. The endof the spigot 3| engages the prongs 29 compressing the spring 25 so thatthe gasket 26 is unseated from the valve seat l8. Liquid may then flowfrom the interior of the drum through the passages formed by the prongs29 between the valve 20 and the end of the spigot 3|. When sufficientdrainage has been effected, the spigot 3| may be removed from theassembly. An initial outward thrust will cause the locking ring 56 tobecome disengaged from the locking groove 54 whereupon the spigot may bemoved to the position, for example, as shown in Figure 2, with thelocking ring 56 engaging the groove 55. In this position, the poppetvalve 20 closes sealing the interior of the drum. A seal is stillprovided by the 0 ring 49. A. second outward thrust serves to disengagethe locking ring 56 from the groove 55 and permits complete withdrawalof the spigot 3| from the assembly. This dual action, in slowing downthe withdrawal of the spigot, permits drainage of the contents from theangled passage 58 and prevents leakage between the spigot and thebushing ring |6, thereby protecting the operator against splashing suchas would occur if the spigot 3| were removed from the sealed chamber inone quick outward thrust.

Obviously, when the spigot 3| is withdrawn from the bushing ring I6, thevalve 20 has already been closed in the position as shown in Figure 2,and, upon complete removal of the spigot 3| from the bushing ring Hi,the dirt eliminator cap 32 will likewise automatically close therebystopping fluid flow and keeping all elements, such as dirt, water, etc.from entering the drum. This not only assures any remaining fluid beingkept clean, but so minimizes drum corrosion that the life expectancy ofthe drum will be more than doubled.

Inasmuch as the drum so equipped as described above does not have to beplaced on .its end for the purpose of attaching a spigot, which has beennecessary heretofore, the present invention not only minimizes man powerinjuries, but permits stacking drums on their sides in large piles withmechanical lifts so. that the drums are ready for instant fluidwithdrawal as and when desired.

Figures 7, 8, 9 and 10 show another embodiment of the present invention,utilizing a flapper valve construction 60 instead of the poppet valve2|] of Figure 1. As the construction of the spigot 3|, the dirteliminator cap 32 and the locking ring construction and the 0 sealconstruction of the spigot and bushing ring l6 of this embodiment aresimilar to that described with reference to Figures 1 to 6, inclusive,further description of these parts is unnecessary and therefore likereference characters will indicate the like or similar parts of the twoembodiments;-. of:- this, invention; The; flapper valve Bodssimilarlyconstructed as the dirt eliminator cap 32:v in that, the valvecaptilllis provided with a serrated seat. 61, provided with annular rings forseating archloroprene rubber gasket whi h can withstandiattaok, y the flcontained, in the drumasihe gaskets 26 and 40.:previously described.Theflapper valve to cooperates with the seat E8 of the bushing ring Hito; close the, drain passage, ll. Thevalve 6,2:has 13,13,311! of ears.or; lu s. 3 receiving a pin, fi' ictherethrough mounted ;in lugs 65 ofthe bushing; ring if to: swingably; mount; the valveon theebushing.ring; I6; A; stop 66 engaging a recess. 5.7; limits: the. verticalmovement of the valveta; Azvalyeeanretainer 53 of the flapper valve-ti!icompriseszan integrally extendingprong fiawhichis adapted to,,engagethe, inner end ofaithelspigot 3b as, illustrated in Figure- 9, andrisadapted alsoto vaiiix the gasket 62 C021}:

parable tothe. gasketpid in, position by peening or staking as ati'iiirTheiinneriace of thepvalve, 62isengaged by-a-laterallyextendingnspringfinger ii of, a

material such as. a.chlorprene. rubber is disposed. between, the-valvecap. retainer t8, and therdrum cap $5v ,to-present a, space for engagingthe -valve seat E8: to seal the passageway 58 when the valve-tdis intitsclosed position ior example asrin Figure ,10.

Figure '1 illustratesthis embodiment of the inventionaofl the pivotedflapper valve and dirt eliminator-capof the drum assembled according tothe-present; invention andillustrating the as sernbly in hermeticallysealed and locked condition as -in transit or storage, and the, dirteliminator cap 32 may be wired in position for transit and storage, asillustrated in, Figure i,;

Theoperation of the flapper valve drum cap eithe -embodimentillustrated-imFigures '7, 8, 9, h and 10 is substantially. similar;tothat described with reference, to. the. operation oftheembodimentaillustrated: in; Figure 1. Figure 10 illus; tr-atesthe-condition whereinthespigot 3i con-.

tainingthelook ringconstruction 56 andcarry-- D ing-the resilient 5-0:sealing ring Q2, is. inserted into thering. assembly, 39 after raisingthe. pivoted.dirt-eliminating cap-.;32i in the. position shown. In this=.position, the valve (in, is still closed and insealing engagementwiththe sealing ring 62 engaging-the:valve-seat id. Inthepoe sition shown inFigure-7, the lockring .56 engages-the-outer positioned grooved? Whenthe'spigot 3 5 is-coinpletely thrustcinto the ring assembly iii;as-shownin Figure 9, the shoulder- 53 engages the comp ementally formedseat fiezand theinner endoi thespigot Eben gages the complementallyformed portion 52 of theioushing ring it, and the inner, faceot thespigo enga es the outwardly extending, prong heto.;unseat.thevalveteifrom the seat, 58. Inthe completelyopenedposition, asshownin Figure 9, thev locking... ring 15 ii.:engagestheninner groove :54. Although-thev forceexertedby the spring l2 and theflow of, fiuidthrough theopeninginto the spigot .irom the drumv tends toforce the :spigot outwardly, the, locking ring 56 securely, retains thespigotlin its drainage position. the ,0, ring illeffectively seals the.spigot within the passage 11 to prevent leakage of fluid.

Ill

The drum cap; ea is 'complernentally formed 7 When sufficient drainageof thedrum occurs e i ot s; p e ut ofthe assembly ntwo. a n the fi s stae r pr nted by Figure 10,.

the pivoted flapper valve 65 is closedas the spigot moves so'that thelock ring engages the correspondinggroove 55, and the spigot is stillsealed by the 0 seal 49; A second outward pull onthe spigot 3! willunseat the lock ring 56 from the locking groove 55 and permit completeWith drawal ofthe spigotfrom the ring assembly with-- out splashing thecontents of the spigot drain portion, As the spigot 3|, is removed fromthe bung assembly, the dirt eliminator cap 32 is spring biased into itsclosed position, Figure 7.

From the-above description, it will be understood, that thisinventionprovides a self-closing,

cap assembly for; drums, barrels, and othercontainers and is adapted tobe readily mounted in the bung bushing ofa drum or barreland can .be

locked in position for storage and shipping, or can receive ademountable drain, spigot carrying a lock ringand seal construction forselective positioning of the spigot.

It is also evident thatthere has been disclosed a seif-closing drum capassembly and dirt eliminator cap assembly for drums and the likein:

which the fluid flow characteristics of this unit are greatly superiorto thespigots now in use that hav to bemanually held in flow position.Furthermore, this new unit meets all vacuum, pressure and temperaturetests particularly thosev corresponding to severe arctic conditions forwhich this assembly is used and that the synthetic rubber-like sealholds gasoline perfectly when tested, for example, at 92 F. which is 12below the most severe specifications,

There has also herein been provided apermanent automatic iiuid drum cap,or adapter, that has a low initial and maintenance cost and isfunctionally highly efficient for the most severe weather conditions. 7

It will, of course, be understood that various details ofconstructionmay be varied through; a wide range without departing:iromtheprinciples of this invention, and it is, therefore, not thepurposeto limit the patent granted hereon other- Wisethan necessitatedby the scope of theape. pended claims.

I claim as my invention:

1. In a drum cap and spigot assembly, the. improvement of abushing ringto bemountedin' a drum I openingand having a flow passage'thereethrough, a poppet valve mounted at one endotsaid ring and having aspring biased valveelementseatable onthe end of said ring to control theflow of fluid through the flow passage, a sec: ond valve at the otherend of the ring comprising a spring biased gate valve normally urgedinto seated position on the other end of the ring to preclude the entryof dirt intothe flow passage, a spigot. insertable in said flow passageupon openingsaid gate valve and having a projecting portion to retainsaid gate valve open when said spigot iscpositionedin said flow passage,the end of said spigot being engageable viithrsaid poppet valvetoopenxsan e upon insertion'of saidspigot into said flow passage andcomplementally formed interlocking mating means betweenrsaid spigot andsaid ring tolock saidispigot in adjustedaxial positions, said matingmeans come prisinginterlocking ring, and groove means including a ringof flexible material to sealthe spigot in the flow passage.

2. -in, adrum cap and spigot assembly, a bush;- mg; ring having a flowpassage therethroughand a plurality of radially spaced guide membersprojecting from one end thereof, a plurality of apertures, there beingone aperture in the end of each of said guide members, a cup-shapedelement having lanced portions in the side walls thereof engageable ineach of said guide member apertures to place said cup-shaped element andsaid guide member in firm assembly with one another, said cup-shapedelement having an opening through the end wall thereof, a valve having astem slidably supported in the end wall opening of said cup-shapedelement and a head portion on said valve slidably' engageable with saidguide members, a spring around said stem operative between saidcup-shaped element and said valve head portion to normally spring biassaid valve toward the bushing ring and a radially inwardly extendingannular lip on the bushing ring forming a valve seat for said valve.

3. In a drum cap and spigot assembly, a bushing ring having a flowpassage therethrough and a plurality of radially spaced guide memberspro- ,iecting from one end thereof, an aperture in the end portion ofeach of said guide members, a cup-shaped element having lanced portionsin the side walls thereof engageable in said guide member apertures,said cup-shaped element having an opening through the end wall thereof,a valve having a stem slidably supported in the end wall opening of saidcup-shaped element, a head portion on said valve slidably engageablewith said guide member, a spring around said stern operative betweensaid cup-shaped element and said valve head portion to normally springbias said valve towards the bushing ring, a radi ally inwardly extendingannular lip on the bushing ring forming a valve seat for said valve, anda spigot engaging member having a plurality of axially projecting prongsand being mounted in firm assembly on the valve head portion of saidvalve, whereby a spigot inserted into said bushing will engage saidprongs and open said valve against the bias of said spring.

4. In a drum cap and spigot assembly, a bushing ring having a flowpassage therethrough and a plurality of radially spaced guide membersprojecting from one end thereof, an aperture in the end of each of saidguide members, a cup-shaped element having lanced portions in the sidewalls thereof engageable in said apertures to place said element in firmassembly with said guide members, said cup-shaped element having anopening through the end wall thereof, a valve having a stem slidablysupported in the end wall opening of said cup-shaped element, a headportion on said valve slidably engageable with said guide members, aspring around said stem operative between said cup-shaped element andsaid valve head portion to normally spring bias said valve towards thebushing ring, and a radially inwardly extending annular lip on thebushing ring forming a valve seat for said valve, said valve headportion having a serrated seating surface and a gasket made of elasticmaterial affixed thereto to engage said annular lip, whereby seating ofsaid valve against said annular lip will elastically displace saidelastic gasket into said serrations to improve the pressure holding sealof the valve.

5. In a drum cap and spigot assembly, a bushing ring having a flowpassage therethrough and a plurality of radially spaced guide membersproiecting from one end thereof, a cup-shaped element retained on theend of said guide members, said cupshaped element having an openingthrough the end wall thereof, a valve having a stem slidably supportedin the end wall opening of said cup-shaped element and also having ahead portion slidably engageable with said guide members, a springaround said stem operative between said cup-shaped element and saidvalve head portion to normally spring bias said valve towards thebushing ring, a radially inwardly extending annular lip on the bushingring forming a valve seat for said valve head portion having a serratedsurface, a gasket made or elastic material abutting the serrated seatingsurface of said valve head portion and adapted to engage said annularlip, whereby seating of said valve against said lip will elasticallydisplace said gasket into said serrations to improve the pres sureholding seal of the valve and a spigot engaging inernber having aplurality of axially projecting prongs, said spigot engaging member bing mounted in firm assembly on the valve head portion and operable toclamp said gasket into abutting relationship with the valve headportion, said prongs on said spigot engaging member being engageaolewith a spigot inserted into said bushing ring to open said valve againstthe bias of said spring.

JACOB RUSH SNYDER.

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